什么是glreadpixels的direct3d等价物 [英] What is the direct3d equivalent of glreadpixels

问题描述

我正在将我的openGL 3d查看器移植到DirectX 10等效版本。我发现没有glReadPixels等价的事实。在互联网上进行了大量搜索后，我仍然没有找到答案。我使用glReadPixels来获得鼠标下像素的z深度。有没有人知道DirectX 10这样做的方式？我需要一个能够获取鼠标坐标，查询z缓冲区并报告像素深度的函数。

谢谢。



< b>我尝试了什么：



我在互联网上搜索了一遍，没有发现任何内容

I am in the middle of porting over my openGL 3d viewer to a DirectX 10 equivalent. I have come across the fact that there is no glReadPixels equivalent. After a lot of searching on the internet I still haven't found an answer. I use the glReadPixels to get z depth of a pixel under the mouse. Does anyone know the DirectX 10 way of doing this? I need a function that takes the mouse coordinates, queries the z buffer, and reports the depth of the pixel.
Thanks.

What I have tried:

I have searched the internet exhaustively and found nothing

推荐答案

在dx9中的

（对不起，但是应该让你开始）你将渲染到纹理（使用SetRenderTarget）然后到达纹理的表面（GetSurfaceLevel），然后锁定它并从中读取（LockRect）

in dx9 (sorry, but that should get you started) you'd render to a texture (using SetRenderTarget) then get to that texture's surface (GetSurfaceLevel), then lock that and read from it (LockRect)

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